Machine for making loose-leaf ledger-paper.



H. BROWN. MACHINE FOR MAKING LOOSE LEAF I EDGER PAPER.

, APPLICATION FILED AUG'I, I9I3. 1,231,698

Patented July 3, 191?.

Z SHEETS-SIIEET IA l :n Nl

I I II. I I n: I, nv. M I I I .l ,IIMAN I I IIII I .m I f I I m N H. BRUVN. MACHlNE FOR MAKING LOOSE LEAF LEDGEP. PAPER. APPLlCATiON FILED AUG.l, i913. Lfii 'lmentodJuly 3,1917.

2' SHEETS-SHEET 2.

rolls.

senescence.

TAHNE FR MAKING: LGSE-LEAF LEDGEEPAPER.

Speccetien oi Letters Patent.

,n c leiten-te i:

To ali' whom it meg comcast:

Be it known that l, HOWARD BROWN, e citizen of the United States, rcsicieg si; Springfield in the county of Hampden end State of Massachusetts, have invented new and useful improvements in Machines for Makin Loose-LeetLedgeePeper, ci which 'the fol owing is e speciiicetion.

It is the olj ect of the present invention to provide e machine suitable for use in the manufacture 0f loose leef ledger pages, ing neer the hinged portion of. those pages en aree specially treated to make the sheet incre pliant and more readily adapted for bending when in the ledger, Without crinkling or puckering et the bend.,

"llie machine treats the peper While it is still in e continuous sti-ip or weleens. preferably While still in the peper meu elaine e116. under definite and ret-her exact# ing physical conditions, suoli es il'empness and plasticity. The pepe? sheet or web under treatment is -tiret nicely y.adjusted 'to the conditions et hund end then passed through between rollers, Where it is subjected to a locelizecl compression to bring the fibers close together `along certain prede termined lines, Withcrut substantial tlisplecement or fracture of the fibers, thereby not only reducing the thickness `of the sheet :it the treated areas, but glso `changing its physical structure and increasingrits density end making it more pliant at these eiees so that after the web is out up into ledger sheets, those sheets are readily bent near the hinged portion Withoutmrinkling or pucker ing. `After this compression et the rolls, the peper web passes to' e drier drum and then tosucceedm drier drums, moving et e rapid rate and t ere the heet .of the drums so xes or Jcakes the web strueture,` that the sheet'retains permanently-the eect of itsl severe and momentary compression et the In the eccompenyin l'difewingsf 4 Figure l is e side elevation of the roller mechanism through which e Web-scf peper may be passed continuously to receive the special treatment here contemplated.

Fig. 2 is an end elevation of the rolls which this de showing their and seeoncl r,ctiifve View ci s ledger me machine, here cliscicsV s shown in io' 'l i elimini-ils l their upper coals to Yeceive the ,Cl ci the d'zie'f: c is associated.

The relative locations of the trier renie :ireinolicetecl in Fig. 2 rv' be considered es the :first drier drum oil' series receiving tlie web of' peper eL comes from the press rolls oiE the mec e and delivering it over roll 3 im? treatment, after 'which the peper passes directly7 to next drier drum 9 so that tlie heating :incl drying action of that drum may serve quickly 'to En in the peper, the compressing e'ect set up at the rolls.V The drying cli-ums may be of usuel construction Witli e l) holding the peper-Web in close Contact with the steam heated cylinders of the drier iur ing its rapid movement 'through this stage of the machine The peper-muy'tlien pees to other drying drums in usuel manner and nelly through calender rolls, es in orinery practice. The calenclering operetion, (loes not disturb the beneficial eil'ect ci compect ing the flitsers locally and leaves these consilipectecl erees substantially uimiiecteri. Moiniteiiebove roll 3 with its ring blocks il, and 12 slidingly positioned in the 'slotted stesflercls enti 2, is c roll ci shaft 1%', which metile relatively smell in diem- --eterend cn Wliicli e lurality oidisirs, le are mountexi, llliese dis :s sie hero. :incl inelastic end may ce of brass or ci? iron or the like, with suitable collars l5, emi clamping bolts 16. They preferably ere sdjnstelale sloeg;

the shaft 13 te very tlie clistence between nere einem lmfy the treated areason the paper web. Plhe total length of shaft 13 may vary, but mai be long enough for use on aneighty inc paper machine, the disks la being sufficient in number and so spaced as to yield paper cutting to advantage commercially. With shaft 13 as long as this, there is a tendency for the shaft to bow up in the middle or to Whip under the heavy pressures `which must be applied, and to counteract this tendencyand to equalize 'the pressure throughout the entire width of the sheet, use is made of a Weighting roll 17 surmounting the disks 14: and resting directly thereon, With its trunnions housed in bearing blocks 18, slidablyA mounted in standards l and 2 and held down by stud 19, which passes freely through the cross bar 20, surmounting each standard., but is provided with a hand Wheel 2l threaded on the stud in su ch a Way that by turning the Wheel, the stud may be raised through the 'cross members 2O to liftbearing block 18,

thereby to lift the Weight roll'17 away from the disks 14'. Weighted levers 22 (Fig. 2) may be provided for each standard to increase the effective pressure of the Weight roll 17 on the disk.

The disk carrying shaft or roll 13 is rotated at the same peripheral speed as roll 3 by means of a suitable gear 23 and also is capable of longitudinal shifting through the action of a hand wheel 24: niounted 'to turn a shaft 25, Whereon is carried a yoke 26, the

arms of which tit in an annular groove 27 cut in the end of shaft 13. It sometimes happens in practice, that the paper strip 17 shifts slowly in its position on roll 3 longitudinally thereof and in order that the compressed areas may be properly located on the sheet, it is desirable toshii't the disks, as above recited, to the same degree.

In using the apparatus here disclosed, it is desirable that the material under treatment, be brought to proper physical condition before the pressure is applied, as otherwise either the impression Will not be retained or there will be destructive crushing and fracn ture of the fibers. The initial production of the paper web may be in accordance with standard practice, as for instance on a Fourdrinier machine and when that continuous strip comes from the press rollsto the first drum of the drier, it is damp and somewhat plastic and the ibers `which make up its structure are matted together` as a porous mass, substantially uniform in thickness and homogeneous in structure. At the lirstdrier drum, the heat of the drum and the `development of Water vapor or steam in the' Web, as the result of that heat, acts to temper the mass of fiber and While removing some of the excess moisture, leaves the structure in pliant condition, best suited for the severe compression which it must undergo at the haa-isos i next stage of its treatment. ln this porous andtthere for. a brief instant is subjected to extreme pressure along predetermined lines,

the areas thus compressed having their fibers compacted, butwithout breaking or destruction and with substantially no displacement of the iibers other than that incident to this compacting. The

rily applied, is extreme, higher than could be applied safely yfor prolonged periods and after this momentary compression, the paper goes almost instantly to the second drier drum andthen on around succeeding drums, the action' of these drums serving to fix or ,I bake in the eiect produced .by the disks, stiiiening up the ber structure and render- Aing the'sheet Erm. and hard for delivery to the calender rolls. It thus results that areas pressure thus momentawhich have undergone extreme compression and quick baking, are still in the paper when it reaches the calenders and are not dief turbed 'in the calender rolls, but remain characteristic features of the sheet. Ultimately the long web of paper with its longitudinally extending treated areas may be out up into ledger sheets of the general character shown in Fig. 3 Withthe treated areas ex tending across to constitute the hinge);Lv or" n 'ge bending portion of' the sheet. This or condensed portion of the sheet gives the paper more flexibility and the book made up et' these sheets when open, Will lie dat and `in convenientposition for use.

1. In combination with the heater drums, of a-paper making machine, a pair of stand arde adiaceht thereto, a pair or rolls carried by said standards, the topmost ot said rolls bearing impression disks, means ior posin tively driving both of said rolls, the topmost of said rolls being vertically7 adjustable in said standards, a Weight roll supported to bear on said disks and Weighted arms coo erating with said Weight roll to govern t e pressure of said disks on the paper.

2. In a paper machine, the combination of 'a pair of standards, bearing boxes supported by said standards, a pair of rollers mounted in said boxes, the topmost roll audits boxes being adjustable in said standards and carrying a plurality of rigid impressiondisks, a weight roll bearing on said disks to equal- .ize the pressure 'thereof on the paper web,

advance of one of the drers of said paper my name to this speccaton in the presence making machine, whereby the web passed beof two witnesses. tween said 1011 and disk will be compacted 4 and condensed along a predetermined strip y 5 or stripe .therein before it is completely Witnesses:

dried. ROBERT S. KNEELAND,

ln witness whereof, I hereunto subscribe GEORGE H. -MEAD.

HOWARD BROWN. 

